hanging Alexander Rodchenko was a Russian artist, sculptor, photographer and graphic designer. He was one of the founders of constructivism and Russian design; he was married to the artist Varvara Stepanova.
On looking at the film in monochromatic light he saw, with the delight attendant on fulfilled prevision, surrounding the place of contact, a series of bright rings separated from each other by dark ones, and becoming more closely packed together as the distance from the point of contact augmented (as in fig. 14). Six lectures on Light, John Tyndall 1872